AgentStack
Browse Sign in
Browse Why AgentStack Sell Docs
Sign in
SKILL verified MIT Self-run

Xss Frontend Security

skill-zhaji2333-ckskills-xss-frontend-security · by zhaji2333

当目标存在评论/昵称/富文本/私信/工单/搜索反射/Markdown解析/前端DOM操作/postMessage/跨域配置等功能时调用。负责反射型/存储型/DOM XSS、CSRF、CORS错误配置、Clickjacking 的深度挖掘与绕过。

No reviews yet
0 installs
0 views
view→install

Install

$ agentstack add skill-zhaji2333-ckskills-xss-frontend-security

✓ scanned · ✓ verified, works with Claude Code, Cursor, and more.

Security review

✓ Passed

No issues found. Passed automated security review. · v0.1.0 How review works →

  • Prompt-injection patterns
  • Secret / credential exfiltration
  • Dangerous shell & filesystem operations
  • Untrusted network calls
  • Known-malicious package signatures

What it can access

  • Network access No
  • Filesystem access No
  • Shell / process execution No
  • Environment & secrets No
  • Dynamic code execution No

From automated source analysis of v0.1.0. “Used” means the capability is present in the source — more access means more to trust, not that it’s unsafe.

View the full security report →

Verified badge

Passed review? Show it. Paste this badge into your README, it links to the public security report.

AgentStack Verified badge Links to your public security report.
[![AgentStack Verified](https://agentstack.voostack.com/badges/verified.svg)](https://agentstack.voostack.com/security/report/skill-zhaji2333-ckskills-xss-frontend-security)

Reliability & compatibility

Security review passed
0 installs to date
no reviews yet
today

Declared compatibility

Claude CodeClaude Desktop

Compatibility is declared by the source manifest. End-to-end runtime verification is coming, see below.

Preview Execution monitoring

We're building live execution health for every listing: tool-call success rate, median latency, uptime, and last-checked timestamps, measured, not self-reported. It isn't live yet, so we don't show numbers we can't stand behind.

How agent discovery & health will work →
Are you the author of Xss Frontend Security? Claim this listing to set pricing, connect Stripe payouts, and keep 70% of every sale.
Sign up to claim

About

xss-frontend-security — XSS 与前端安全专项深度挖掘

何时调用(触发条件)

  • 评论、留言、昵称、签名、富文本、私信、工单等存储型输入点
  • 搜索框、报错页、参数反射
  • 前端 DOM 操作:location、hash、innerHTML、document.write、eval
  • postMessage 消息处理、iframe 嵌套
  • 跨域配置:Access-Control-Allow-Origin、CORS 预检
  • 敏感操作无 Token/Referer 校验(CSRF)

一、漏洞类型全景

| 类型 | 场景 | 修复 | |---|---|---| | D1. 反射型/存储型XSS | 搜索、评论、富文本 | 输出编码、CSP | | D2. DOM XSS | location/hash/postMessage | 安全DOM API | | D3. Clickjacking | iframe嵌套 | X-Frame-Options | | D4. CORS错误配置 | *+凭证 | 严格白名单 |

二、内容/社交类场景表(存储型重点)

| 场景 | 漏洞类型 | 挖掘要点 | |---|---|---| | 评论/留言 | 存储XSS/CSRF | 富文本过滤不严、HTML标签逃逸 | | 私信/聊天 | XSS/越权查看聊天记录 | 消息ID遍历、会话鉴权缺失 | | 用户昵称/签名 | 存储XSS/SQL注入 | 特殊字符未过滤、后台展示触发 | | 文章/帖子发布 | XSS/SSRF(远程图片) | Markdown解析、外链加载 | | @提及/通知 | 用户枚举/消息轰炸 | @任意用户、批量触发通知 | | 举报/投诉 | 信息泄露/XSS | 举报详情含敏感信息、客服后台触发XSS | | 分享/邀请链接 | 链接可遍历/信息泄露 | 分享token可预测、权限过大 |

> 存储型 XSS 的关键:受害者视角(客服后台、管理员预览、其他用户打开)决定危害等级。

三、XSS 绕过技术

HTML实体:<script>
事件:onerror/onload/onfocus/onmouseover
标签:、、、
伪协议:javascript:、data:

进阶思路:

  • 过滤绕过:大小写、双写、编码嵌套、空白符/换行注入
  • 富文本过滤逃逸:事件属性、svg/math 命名空间、style 表达式
  • 服务端 vs 客户端过滤差异
  • 存储点污染 → 多个触发点(后台/导出/邮件)

四、CSRF 专项

场景

  • 资金操作、绑定账号、敏感配置

挖掘

  • CSRF Token 缺失
  • Referer/Origin 可绕过(空 Referer、跨子域、https://evil.com.trusted.com
  • Token 不绑定会话(固定 token 可重用)
  • GET 请求执行敏感操作

修复

  • Token、SameSite、二次确认

五、CORS 错误配置专项

  • 反射 Origin:Access-Control-Allow-Origin: + Allow-Credentials: true
  • 前缀匹配漏洞:trusted.com.evil.com
  • 空 Origin / null Origin 反射
  • 与凭证配合的敏感数据读取

六、Clickjacking 专项

  • 敏感操作页面是否可被 iframe 嵌套
  • 检查 X-Frame-Options / CSP frame-ancestors
  • 配合诱导点击(按钮覆盖)

七、验证要点

  • 每个输入点测:反射位置、存储位置、输出上下文(HTML属性/标签内/JS字符串)
  • 浏览器执行验证(无头浏览器截图/DOM 变化)
  • 存储型确认触发链条:注入 → 存储 → 受害者页面加载 → 执行
  • XSS 影响评估:能否打 Cookie(HttpOnly?)、能否打后台、能否打管理员
  • 组合拳:Self-XSS + CSRF → 存储型 XSS 攻击他人;XSS → 钓鱼/接管会话

八、修复建议

  • 输出编码(上下文相关:HTML/属性/JS/URL)
  • CSP 严格策略、禁用内联
  • 富文本使用白名单解析器
  • CSRF:Token + SameSite + 敏感操作二次确认
  • CORS:严格白名单,禁止反射 Origin 与通配符+凭证

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

Install and usage instructions live in the source repository linked above.

Reviews

No reviews yet, be the first.

Versions

  • v0.1.0 Imported from the upstream source.